TY  - JOUR
AU  - Röttger, A.
AU  - Weber, S.
AU  - Theisen, W.
AU  - Rajasekaran, B.
AU  - Vaßen, R.
TI  - HVOF spraying of Fe-based MMC coatings with in-situ formation of hard particles by hot isostatic pressing
JO  - Journal of thermal spray technology
VL  - 21
SN  - 1059-9630
CY  - Boston, Mass.
PB  - Springer
M1  - PreJuSER-22562
SP  - 344 - 354
PY  - 2012
N1  - Financial support of this project from the German Research Foundation (DFG Project No. TH531/6-1; VA163/4-1) is gratefully acknowledged.
AB  - Thick (2-3 mm) Fe-base coatings with admixed ferrotitanium (Fe30Ti70) were applied to austenitic steel by a high-velocity oxy-fuel process (HVOF). Hot-isostatic pressing (HIP) was carried out to the decrease porosity and to increase the material strength, wear resistance, and adhesive bond strength of the deposited coating to the substrate material. SEM and XRD investigations confirmed the formation of hard titanium carbide (TiC) particles during HIP treatment as a result of strong carbon diffusion out of the metal matrix and into the Fe30Ti70 particles. The mechanical and wear properties of the densified coatings were investigated by means of shear tests, hardness measurements, and abrasive wear tests. A comparison of the coatings in the as-sprayed and the HIPed state showed a large increase in the wear resistance due to in situ TiC formation.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000303472600014
DO  - DOI:10.1007/s11666-012-9736-3
UR  - https://juser.fz-juelich.de/record/22562
ER  -